Analyst Upgrades

• Citigroup (C) to outperform from market perform at Bernstein.
• Cubist Pharma (CBST) to outperform from neutral at RW Baird.
• Pentair (PNR) to buy from hold at Citigroup.
• Heritage Financial (HFWA) to outperform from market perform at Keefe Bruyette.
• SL Green Realty (SLG) and Digital Realty (DLR) to market perform from underperform at FBR Capital.
• MGM Resorts (MGM) to neutral from Sell at Janney Capital.
• Ciena (CIEN) to buy from neutral and Olin (OLN) to buy from underperform at BofA/Merrill.
• Mellanox (MLNX) to overweight from equal weight at Barclays.
• ConocoPhillips (COP) and Canadian Natural (CNQ) to overweight from neutral at JPMorgan.
• IDEX (IEX) to outperform from perform at Oppenheimer.
• Taiwan Semiconductor (TSM) to buy from hold at Deutsche Bank.
• Ctrip.com (CTRP) to positive from neutral at Susquehanna.
• Linear Technology (LLTC) and Analog Devices (ADI) to hold from sell at Auriga.
• Quicksilver (KWK) to outperform from market perform at BMO Capital.

Fourth quarter GDP ended on a uptrend, coming in at 3.1%. The state of the economy was healthy and it looked like growth would continue to match or exceed Q4. Based on that scenario, Bank of America (BAC) analyst Ethan Harris, forecast first-quarter 2011 GDP to come in at 3.3%.

But in the few short months of 2011, the world is getting turned upside down. The conflict in Libya has cut OPEC oil production and sent oil prices skyrocketing. In turn, the price of gasoline is nearing $4.00 per gallon. And food processors are raising prices due to higher raw commodity prices. These two factors have put a dent in the household budget.

Here's an interesting story, which speaks volumes about the psychological dynamic of the markets. On Friday the United States Department of Agriculture (USDA) will report on end-of-season inventories, often called 'ending stocks.' Traders are getting word the report may show inventories are lower-than-usual. Against that backdrop, as a trader you certainly don't want to take a short position. So what to do? You buy, of course.

Monday's buying drove corn prices to a record high of $7.6025 per bushel, up 24.25 cents, as reported in the Wall Street Journal. Country Hedging, a brokerage firm, said: "Federal forecasters could drop the projection to less than 500 million bushels from last month's 675 million. This is a 15 year low."

Analyst Upgrades

• Goodrich (GR) to overweight from neutral at JPMorgan.
• Ford (F) to neutral from underperform and CenterPoint Energy (CNP) to outperform from neutral at Credit Suisse.
• Dollar Financial (DLLR) and Edwards Lifesciences (EW) to buy from hold at Jefferies.
• Alterra Capital (ALTE) to buy from hold at Deutsche Bank.
• Cheesecake Factory (CAKE) and P.F. Chang's (PFCB) to buy from neutral, as well as SunTrust (STI) to neutral from sell, at Janney Capital.
• Arch Capital (ACGL), Axis Capital (AXS), PartnerRe (PRE), Everest Re (RE) and Transatlantic (TRH) to buy from hold, as well as W. R. Berkley (WRB) to hold from sell, at Citigroup.
• Optimer Pharm (OPTR) to buy from neutral at BofA/Merrill.

Two questions on investors' minds are: Should I buy Apple (AAPL), and where is the stock headed? Leading banks and financial advisory firms hire analysts, whose job it is to figure out the strengths and weaknesses of a given company -- and from that data make a recommendation and a projected stock price.

At Morgan Stanley that analyst is Katy Huberty. In a Fortune article she describes two possible scenarios for Apple. One is her best case. The other is her bearish take.

Analyst Upgrades

• Bristol-Myers (BMY) to hold from underperform at Jefferies.
• Pep Boys (PBY) to buy from hold at Stifel Nicolaus.
• Tesla Motors (TSLA) to overweight from equal weight at Morgan Stanley.
• Emerson (EMR) to buy from hold at Deutsche Bank.
• ARM Holdings (ARMH) to buy from neutral at BofA/Merrill.
• NetLogic (NETL) and Cavium Networks (CAVM) to buy from hold at Auriga.
• Aimco (AIV) to hold from sell at Citigroup.
• Ceragon Networks (CRNT) to overweight from equal weight at Barclays.

Analyst Upgrades

• Philip Morris (PM) to conviction buy from buy at Goldman.
• Peet's Coffee (PEET) to neutral from sell at Janney Capital.
• Cephalon (CEPH) to equal weight from underweight at Morgan Stanley.
• StoneMor Partners (STON) to outperform from neutral at RW Baird.
• Tibco (TIBX) to buy from underperform at BofA/Merrill.
• Apollo Group (APOL) to outperform from market perform at BMO Capital.

Analyst Upgrades

• Marriott (MAR) to outperform from market perform at Wells Fargo.
• Quest Diagnostics (DGX) and Owens-Illinois (OI) to outperform from neutral at Credit Suisse.
• FirstMerit (FMER) to outperform from perform at Oppenheimer.
• Safeway (SWY) to hold from sell at Citigroup.
• Babcock & Wilcox (BWC) to buy from neutral, as well as Jacobs Engineering (JEC) and W. R. Berkley (WRB) to neutral from sell, at Goldman.
• Pioneer Natural (PXD) to overweight from equal weight at Barclays.
• Teekay Tankers (TNK) to buy from underperform at BofA/Merrill.

U.S. markets were mixed most of Monday with what felt like very directionless trading on light volume. A selloff late in the day erased the small gains, and markets closed in the red today.

Another weak housing figure did not manage to cause too much harm as -- by now -- investors are conditioned to expect poor housing data. Consumer spending and income rose in February, topping expectations. U.S. investors also continued to expect that oil infrastructure would keep growing based upon Middle East build-outs for expanded production.

Analyst Upgrades

• Alcatel-Lucent (ALU) to buy from neutral at Goldman.
• Nvidia (NVDA) to outperform from market perform at JMP Securities.
• Verizon (VZ), AT&T (T), Leap Wireless (LEAP) and MetroPCS (PCS) to outperform from neutral at RW Baird.
• Illumina (ILMN) to buy from hold at Auriga.
• Sun Bancorp (SNBC) to neutral from sell at Janney Capital.
• American Tower (AMT), SBA Communications (SBAC) and Freeport McMoRan (FCX) to overweight from equal weight at Morgan Stanley.

Analyst Upgrades

• Akamai (AKAM) to overweight from neutral at Piper Jaffray.
• Las Vegas Sands (LVS) to buy from neutral at UBS.
• Aetna (AET) to Outperform from market perform at Leerink.
• Hot Topic (HOTT) to buy from neutral at Janney Capital.
• Colonial Properties (CLP) upgraded to Outperform from market perform at FBR Capital and to buy from hold at Citigroup.
• Altera (ALTR) to buy from hold at Citigroup.
• American Reprographics (ARC), CarMax (KMX) and American Campus (ACC) to outperform from neutral at RW Baird.
• Zebra Tech (ZBRA) to neutral from underweight at JPMorgan.
• IMAX (IMAX) to buy from hold at Canaccord.
• Basic Energy (BAS) to neutral from sell at Goldman.
• Mednax (MD) to buy from neutral at BofA/Merrill.
• UTi Worldwide (UTIW) to buy from hold at Stifel Nicolaus.

Analyst Upgrades

• Red Hat (RHT) to outperform from neutral at RW Baird.
• Cogdell Spencer (CSA) to buy from hold at Citigroup.
• Micron (MU) to neutral from reduce at Nomura.
• El Paso Electric (EE) to buy from hold at Jefferies.
• MICROS Systems (MCRS) and Harmony Gold (HMY) to outperform from sector perform at RBC Capital.
• Meridian Bioscience (VIVO) to buy from hold at Canaccord.
• Verso Paper (VRS) to outperform from neutral at Credit Suisse.
• Sony (SNE) to buy from hold at Deutsche Bank.
• Noble Corp. (NE) and Baker Hughes (BHI) to buy from neutral at UBS.
• Tyson Foods (TSN) and Smithfield Foods (SFD) to buy from hold at BB&T.

Analyst Upgrades

• Bunge (BG) to buy from hold at Deutsche Bank.
• Textron (TXT) to overweight from neutral at JPMorgan.
• CSX (CSX) to buy from neutral and Pulte Group (PHM) to conviction buy from neutral at Goldman.
• Aol (AOL) to buy from neutral at UBS.
• Kohlberg Capital (KCAP) to outperform from market perform at JMP Securities.
• Owens Corning (OC) to buy from neutral at BofA/Merrill.
• Jefferies (JEF) to buy from neutral at Ticonderoga.
• Harris (HRS) to outperform from perform at Oppenheimer.

Analyst Upgrades

• Netflix (NFLX) and Zions Bancorp (ZION) to outperform from neutral at Credit Suisse.
• Akamai (AKAM) to buy from neutral at Merriman.
• CSX (CSX) to overweight from equal weight at Barclays.
• Nordstrom (JWN) to buy from neutral, WellCare (WCG) to conviction buy from buy and Humana (HUM) to neutral from sell at Goldman.
• E-Commerce China Dangdang (DANG) to overweight from neutral at Piper Jaffray.
• VMware (VMW) to buy from neutral at BofA/Merrill.
• Celanese (CE) to overweight from equal weight at Morgan Stanley.